Garratt-Callahan Company building (640 11th Street, NW)
MLA
O'Neal, Tracy. "Garratt-Callahan Company building (640 11th Street, NW)." Georgia State University. Special Collections. 1971-03-08, http://digitalcollections.library.gsu.edu/cdm/ref/collection/oneal/id/1351.
APA
O'Neal, Tracy (1971-03-08). Garratt-Callahan Company building (640 11th Street, NW). Retrieved from http://digitalcollections.library.gsu.edu/cdm/ref/collection/oneal/id/1351
Chicago
O'Neal, Tracy. "Garratt-Callahan Company building (640 11th Street, NW)." 1971-03-08. April 24, 2026. http://digitalcollections.library.gsu.edu/cdm/ref/collection/oneal/id/1351.
